<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.Statement" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.sql.DriverManager" %>
<%@ page import="java.util.ArrayList" %>
<%@ page import="java.util.List" %><%--
  Created by IntelliJ IDEA.
  User: zhu
  Date: 2018/5/13
  Time: 23:16
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
</head>
<body>

<style type="text/css">
    table{

        border_collapse:collapse;
    }
    td,th {
        border: 1px solid #000;
        padding: 10px;
    }
</style>
<p><a href="userAdd.jsp" >添加用户</a></p>
<table>
    <thead></thead>
    <tr>
        <td>编号</td>
        <td>用户名</td>
        <td>密码</td>
        <td>操作1</td>
        <td>操作2</td>
    </tr>
    </thead>

    <tbody>
    <%

        //脚本
        //3+1从数据库获取数据

        Connection connection=null;
        Statement statement=null;
        ResultSet resultSet=null;

        String sql="select * from t_users";

        //加载驱动程序
        Class.forName("com.mysql.jdbc.Driver");

        connection= DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/sctu-javaweb-2018?serverTimezone=UTC",
                "root",
                "123456"
        );

        statement=connection.createStatement();
        resultSet=statement.executeQuery(sql);

        class User{
            int id;
            String username;
            String password;
        }

        List<User> userList=new ArrayList<User>();

        while(resultSet.next()){
            int id=resultSet.getInt(1);
            String username=resultSet.getString(2);
            String password=resultSet.getString(3);

            User user=new User();
            user.id=id;
            user.username=username;
            user.password=password;

            userList.add(user);

        }

        resultSet.close();
        statement.close();
        connection.close();

        for(User u:userList){

            out.write("<tr>" +
                    "<td>"+u.id+"</td>" +
                    "<td>"+u.username+"</td>" +
                    "<td>"+u.password+"</td>" +
                    "          <td><a href=\"userAdd.jsp\">添加<a></td>\n" +
                    "          <td><a href='userUpdate.jsp? id = "+u.id+"username = "+u.username+" password = "+u.password+" '>更新<a></td>\n" +
                    "          <td><a href='userDelect.jsp? id = "+u.id+ "'>删除</a></td>\n" +
        "        </tr>");}


    %>
    </tbody>
    <tfoot>
    </tfoot>

</table>
</body>
</html>